// SPDX-License-Identifier: GPL-2.0+
/*
 * Board init file for Dragonboard 410C
 *
 * (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
 */

#include <common.h>
#include <cpu_func.h>
#include <dm.h>
#include <env.h>
#include <init.h>
#include <net.h>
#include <usb.h>
#include <asm/cache.h>
#include <asm/global_data.h>
#include <asm/gpio.h>
#include <fdt_support.h>
#include <asm/arch/dram.h>
#include <asm/arch/misc.h>
#include <linux/delay.h>

DECLARE_GLOBAL_DATA_PTR;

int dram_init(void)
{
        gd->ram_size = PHYS_SDRAM_1_SIZE;

        return 0;
}

int dram_init_banksize(void)
{
        gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
        gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;

        return 0;
}

int board_usb_init(int index, enum usb_init_type init)
{
        static struct udevice *pmic_gpio;
        static struct gpio_desc hub_reset, usb_sel;
        int ret = 0, node;

        if (!pmic_gpio) {
                ret = uclass_get_device_by_name(UCLASS_GPIO,
                                                "pm8916_gpios@c000",
                                                &pmic_gpio);
                if (ret < 0) {
                        printf("Failed to find pm8916_gpios@c000 node.\n");
                        return ret;
                }
        }

        /* Try to request gpios needed to start usb host on dragonboard */
        if (!dm_gpio_is_valid(&hub_reset)) {
                node = fdt_subnode_offset(gd->fdt_blob,
                                          dev_of_offset(pmic_gpio),
                                          "usb_hub_reset_pm");
                if (node < 0) {
                        printf("Failed to find usb_hub_reset_pm dt node.\n");
                        return node;
                }
                ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
                                                 "gpios", 0, &hub_reset, 0);
                if (ret < 0) {
                        printf("Failed to request usb_hub_reset_pm gpio.\n");
                        return ret;
                }
        }

        if (!dm_gpio_is_valid(&usb_sel)) {
                node = fdt_subnode_offset(gd->fdt_blob,
                                          dev_of_offset(pmic_gpio),
                                          "usb_sw_sel_pm");
                if (node < 0) {
                        printf("Failed to find usb_sw_sel_pm dt node.\n");
                        return 0;
                }
                ret = gpio_request_by_name_nodev(offset_to_ofnode(node),
                                                 "gpios", 0, &usb_sel, 0);
                if (ret < 0) {
                        printf("Failed to request usb_sw_sel_pm gpio.\n");
                        return ret;
                }
        }

        if (init == USB_INIT_HOST) {
                /* Start USB Hub */
                dm_gpio_set_dir_flags(&hub_reset,
                                      GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
                mdelay(100);
                /* Switch usb to host connectors */
                dm_gpio_set_dir_flags(&usb_sel,
                                      GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE);
                mdelay(100);
        } else { /* Device */
                /* Disable hub */
                dm_gpio_set_dir_flags(&hub_reset, GPIOD_IS_OUT);
                /* Switch back to device connector */
                dm_gpio_set_dir_flags(&usb_sel, GPIOD_IS_OUT);
        }

        return 0;
}

/* Check for vol- button - if pressed - stop autoboot */
int misc_init_r(void)
{
        struct udevice *pon;
        struct gpio_desc resin;
        int node, ret;

        ret = uclass_get_device_by_name(UCLASS_GPIO, "pm8916_pon@800", &pon);
        if (ret < 0) {
                printf("Failed to find PMIC pon node. Check device tree\n");
                return 0;
        }

        node = fdt_subnode_offset(gd->fdt_blob, dev_of_offset(pon),
                                  "key_vol_down");
        if (node < 0) {
                printf("Failed to find key_vol_down node. Check device tree\n");
                return 0;
        }

        if (gpio_request_by_name_nodev(offset_to_ofnode(node), "gpios", 0,
                                       &resin, 0)) {
                printf("Failed to request key_vol_down button.\n");
                return 0;
        }

        if (dm_gpio_get_value(&resin)) {
                env_set("preboot", "setenv preboot; fastboot 0");
                printf("key_vol_down pressed - Starting fastboot.\n");
        }

        return 0;
}

int board_init(void)
{
        return 0;
}

int board_late_init(void)
{
        char serial[16];

        memset(serial, 0, 16);
        snprintf(serial, 13, "%x", msm_board_serial());
        env_set("serial#", serial);
        return 0;
}

/* Fixup of DTB for Linux Kernel
 * 1. Fixup installed DRAM.
 * 2. Fixup WLAN/BT Mac address:
 *      First, check if MAC addresses for WLAN/BT exists as environemnt
 *      variables wlanaddr,btaddr. if not, generate a unique address.
 */

int ft_board_setup(void *blob, struct bd_info *bd)
{
        u8 mac[ARP_HLEN];

        msm_fixup_memory(blob);

        if (!eth_env_get_enetaddr("wlanaddr", mac)) {
                msm_generate_mac_addr(mac);
        };

        do_fixup_by_compat(blob, "qcom,wcnss-wlan",
                           "local-mac-address", mac, ARP_HLEN, 1);


        if (!eth_env_get_enetaddr("btaddr", mac)) {
                msm_generate_mac_addr(mac);

/* The BD address is same as WLAN MAC address but with
 * least significant bit flipped.
 */
                mac[0] ^= 0x01;
        };

        do_fixup_by_compat(blob, "qcom,wcnss-bt",
                           "local-bd-address", mac, ARP_HLEN, 1);
        return 0;
}

void reset_cpu(void)
{
        psci_system_reset();
}